Window ventilator



April 22 1924. I 1,491,514

E. CAVE WINDOW VENTILATOR Filed Feb. 16. 1923 INVENTOE Aware [a w:

Patented Apr. 22, 1924.,

UNETED STATES enten ELMORE GAVE, OF ST. LOUIS, MISSOURI.

WINDOW VENTILATOB.

Application filed February 16, 1923. Serial No. 619,445.

To all whom it may concern:

Be it known that LELMORE GAVE, a citizen of the United States, residingat St. Louis, Missouri, have invented a certain new and usefulImprovement in Window Ventilators, of which the following is a full,clear, and exact description, such as will enable others skilled in theart to which it appertains to made and use the same.

This invention relates to window ventilators of the type that areadapted to be arranged in operative position in a window opening betweenthe horizontal rail of one sash of the window and a horizontal portionof the window frame.

One object of my invention is to provide an inexpensive ventilator ofthe kind referred to that can be adjusted easily to adapt it to windowsof different widths and which is so constructed that it will efiectivelyventilate a room without liabilityof rain beating into the room.

Another object is to provide a lightweight Window ventilator that, canbe shipped in knock-down form in a small container from the manufacturerof the ventilator.

And still another object is to provide a window ventilator that isequipped with an air filtering device consisting of a piece of fabric,which is combined with the ventilator in such a manner that it can beeasily disconnected fromsame when it becomes necessary to clean or washthe fabric to remove the particles of dust and dirt which the fabriccollects from the air that circulates through the openings in theventilator. Other objects and desirable features of my invention will behereinafter pointed out.

Figure 1 of the drawings is an elevational view, looking at the insideof a window equipped with a ventilator constructed in accordance with myinvention.

Figure 1 is a perspective view, illustrating one end portion of theventilator ar ranged in operative position in the sash guide of thewindow frame;

Figure 2 is an edge view of the ventilator,

taken on the section line 2-2 of Figure 1,

looking in the direction indicated by the arrows. I

Figure 3 is a vertical sectional view, taken onthe line 33 of Figure 1and Figure 4 is arear elevational view of .a

window ventilator constructed in accordance with. my invention andcomposed of three sections. Referring to the drawings which illustratethe preferred form of my invention, A and B designate the top and bottomsash, respectively, of a window and C designates the frame of the windowin which said. sash are slidingly mounted,the side members of said framehaving vertically-disposed guides that receive the side rails of thewindow sash, as shown in Figure 1*. My improved ventilator is of thetype that is adapted to be arranged in the window opening between thehorizontal rail of one window sash and a horizontal portion of thewindow frame when said sash is partly open. The ventilator hereinillustrated is of such construction that it is intended to be arrangedbetween the lower rail lof the bottom sash Band the sill 2 of the windowframe, with the'end portionsof said ventilator projecting into thevertical guides in the side members of the window frameC that receivethe bottom sash, as shown in Figures 1, 1 and 3.

Said ventilator is composed of a plurality of sections D' constructedpreferably of sheet metal and combined in such a way that they can beadjusted longitudinally relatively to each other to decrease or increasethe length of' the ventilator, thereby enabling the ventilator to beused in windows of different widths. It is immaterial how manysectionsthe ventilator comprises, but it will usually be composed of twosections, as shown in Figure 1, or three sections, as shownin Figure 4,combined in such 'a' way that they are capable of being adjustedlongitudinally relatively to eachother and are capable of being takenapart easily-so as to permit the ventilator to' be shipped in knock-downform 'andpacked in a relatively, small container of substantially thesame length as one of thesections of the ventilator. When the ventilatoris composed of two sections each of said sections will. comprise avertically-disposed web 3 provided at its top and bottom edges and atits outer end with integral, laterallybent portions' that form a rimwhich extends around .three sides of said'section,

so that whenthe two sections are assembled the ventilator will have apractically continsm r fe heeeeeaw i al edge. The sections of theventilator are so proportioned and designed tha-ti the inner end portionof one section can bertelescoped into'the inner end portion of theadjacent section, thereby enabling the length of the ventilator to bevaried easily byadjusting one section longitudinally relatively to theother; Various means can be used for concan "be doubledover at Wander,asshown in'l gure 1 so'asto-form grooves m which necting thesectio-nstogether, but I prefer to provide the web 3 of one section, forexample, the right hand section, withheaded studs and provide thevertical'web of the other 7 section with horizontally-disposed slots GthrOugh which the shanks of said studs if project, said slots havingenlarged portions 6 that are largejenough to receive the heads of thestuds5, thereby-permitting the sections to beassembled and disassembledeasily-bymoving them longitudinally into such a posit-ion that the headsof the the flange 7 and the bottom rim portion A 'locked with eachother. In assembling the of the left hand sectioncan slide, therebycausing the flanges ,7 and the bottomrim portions 4: of the two sectionsto be inter sections of the ventilator the inner end por= tion of theleft hand section is inserted in the inner end portionof'the righthandasection in such a way that the verticallydisposed flange 7 and bottomrimportions 4 on said left hand section will be'positioned in thegrooves 'formefdhy the bent over portion 7* and 4 of the right handvsection. The webs of the twosections are then spread v apartsufficiently to permiti the :web :of the left-hand section to;slide overthestirds '5 until the enlargedportions 6 'ofLthe-slots 6 in the lefthand resect-ionsxcome into ...alignment with the headson said,studs,thusper- 'mitting thewebs-to-be forcedtogether, so as to cause the studsonthe-right hand section "to enter the slots provided fore-same in theis -moved longitudinal-ly of the nother section so asto;arrange.theshanlrset-said studs left hand section. Thereafter, lonesection 'i n the slots The web 3 of each section of the ventilator studs5 on one section are in alignment with the'enlarged port1ons6 ofthe;slots 6.1n the preferably by louvres, each or" which comprises ahorizontally-disposed slot or opening 8 and an integral shield 9 at theupper side of said slot, as shown in Figure 3,that prevents rain frombeating inwardly through the slot, the louvres being formed byxslittingthe web of the section and then bending portions'of said web outwardly."While I prefer to provide each section of the ;ventilator with aplurality of horizontally-disposed louvres, it will, of course, beunderstood that it is immaterial, so far as my invention is concerned,how the ventilating openings are formed or how they are arranged, solong as they are of such design that rain cannot beat inwardly throughthe -:ventilat01.

In order to prevent dust, dirt and the:lil;e from entering the roomthrough the ventilating openings inthe ventilator, the ventilatorequipped with an airfiltering device, formed preferably by a piece offabric E that stretched over the inner side of the ventilator, as shownin Figures 3 and 4, and detachably connected to the ventilator in suchaway that it can beremoved easily when it becomes necessary to cleansaid fabric. In the form of my invention herein illustrated the piece offabric E is provided at its ends with strings or tying devices 10 thatare adapted to be inserted through holes 11 in the end portions of-theventilator, for example,-holes in the upwardlyprojecting fianges 7 ofthesections Dand holes in the rim portions lofsaid sections that bear against the sill 2 of the'window frame. 7 7 W In: arranging theventilator in operative position the bottom-sash B of the window israised, as shown in Figure 1, and the 'ventilatoris then positionedbetween said sash and the sill 2 of the window frame.

One of the sections D of the ventilator is then moved longitudinallyrelatively to the other section, so as to causetheend portions of theventilator to be positioned in the vertical guides in the side membersof the window frame C that receive the side rails or" the bottom sash B,and said bottom sash is then moved downwardly so as to securely clampthe ventilatorin operative position, with the upwardlyeprojectingflanges 7 at the top edgeof the ventilator projecting upwardly cover theinner side of the lower ,rail of the bottom-sash. 'In order to permitthe bottom sash B to 'be moved downwardly into engagement with the rimportions 4 at the top edge of the ventilator when the end portions ofthe ventilator are positionediin the .sashguides ,inthewindow rame C,the vertical flanges 7 at the top edgeof the ventilator are cut away atthe endsof the ventilator as shown in Figure 2, or are madefa trifleshorter than the' is provided with ventilatingopenings'formed sections Dof the'ventilat-or.

A ventilator of the construction above described will not rattle when itis arranged in operative position in a window opening, due to the fact.that it is clamped securely between the bottom sash and the sill of thewindow frame, with the end portions of the ventilator positioned in thesash guides in the window frame, the vertically-disposed sash engagingportions 7 at the top edge of the ventilator assisting in maintainingthe ventilator in position and also forming a fairly tight joint betweenthe ventilator and the portion of the bottom sash that bears upon same.Such 'a ventilator is easy to install or remove from a window opening;it can be adjusted easily to adapt it to windows of different width; itis in expensive to manufacture, as it is constructed from sheet metalsections that can be formed by a simple stamping operation, and it is oflight-weight and such design that it can be taken apart easily andshipped in knock-down form in a small container of substantially thesame length as one section of the ventilator. In addition to thedesirable characteristics above pointed out it is equipped with an airfiltering device that effectively separates or removes particles of dustand dirt in the air which circulates through the ventilator whichfiltering device is combined with the ventilator in such a way that itcan be removed easily and cleaned, thereby making the ventilatorparticularly adapted for household use.

Having thus described my invention, what I claim as new and desire tosecure by Letly of a window opening between the bottom sash and ahorizontally-disposed portion of the window frame with its end portionspositioned in the sash guides in said frame, said member being composedof a plurality of sections that can be adjusted relatively to each otherand each of which is formed from a sheet metal plate provided with slotsand with integral shields arranged in proximity to said slots so as toprevent rain from beating inwardly through the same, laterallyprojecting flanges on said plates that co-operate with each other toform a. rim at the top, bottom and ends of said member, avertically-disposed flange on the top portion of said rim that laps overthe front face of the bottom rail of the sash and terminating short ofthe ends of said member, doubled over portions on one of said sectionsarranged in telescopic relation with co-operating portions on the othersection, and slot and pin connections between said sections.

ELMORE GAVE.

